California Radio Interoperable System (CRIS)

[N6ML]

I believe it's DC104 which would line up with 11044 in my notes. Good catch! I've heard what I suspect that TG to be CHP related but not enough info has been gathered at this time...

What kind of traffic other than testing unless it was strictly radio checks between the two of them?

It was brief today (I didn't have recording on in the morning, so probably missed some traffic then). It was the usual coverage-checking stuff like "now turning onto I-80 from Howe - How do you copy?".... "I copy you 10-2"

 

[kg6nlw]

Darn! I was hoping it might be Radio to Dispatchers...Thanks!

Regards,

-Frank C.

 

[N6ML]

I believe it's DC104 which would line up with 11044 in my notes.

Subscriber 11031 was identifying as DC62, and seemed to be calling DC04...

https://soundcloud.com/n6ml%2F20201026_154845cris_site_2_traffic_to_861_from_11031%2Fs-XTLUPk3i5Ba

 

[kg6nlw]

Subscriber 11031 was identifying as DC62, and seemed to be calling DC04...

https://soundcloud.com/n6ml%2F20201026_154845cris_site_2_traffic_to_861_from_11031%2Fs-XTLUPk3i5Ba

Link is broken on the sound cloud side..

Regards,

-Frank C.

 

[Outerdog]

Logged the following joins/logins today on Site 18 between noon and 1700. No voice traffic detected.

 

[kg6nlw]

Logged the following joins/logins today on Site 18 between noon and 1700. No voice traffic detected.

What app is that? Looks fancier than my DSD+ FL...And neater!

Regards,

-Frank C.

 

[Outerdog]

That is the new version of the OP25 Web UI currently being developed for the Master (Max) branch (along with some significant backend/server improvements for the OP25 core). We expect to have a release soon. Stay tuned.

I've pretty much abandoned Unitrunker and use this now. Sneak peak.



(This is on topic because it's what I'm using to log CRIS-18.)

 

[kg6nlw]

That is the new version of the OP25 Web UI currently being developed for the Master (Max) branch (along with some significant backend/server improvements for the OP25 core). We expect to have a release soon. Stay tuned.

I'll have to look into it. Thanks! It looks real cool. I never got Unitrunker working...SDR# and DSD+ is all I've ever used.

Regards,

-Frank C.

 

[ScannerDude244]

That is the new version of the OP25 Web UI currently being developed for the Master (Max) branch (along with some significant backend/server improvements for the OP25 core). We expect to have a release soon. Stay tuned.

I've pretty much abandoned Unitrunker and use this now. Sneak peak.

View attachment 104135

(This is on topic because it's what I'm using to log CRIS-18.)

Man that looks sweet!

 

[scannerboy02]

Site 30 has been heard near Ontario, CA, with signal level very generally consistent with Santiago Pk. The RRDB entry could use updating I think. The primary CC should be 770.44375 and three secondary control channels, 773.06875, 773.56875, 774.05625. There were 36 hits on TG 1302 from four units when I monitored this afternoon. The only voice channel grants were 774.29375 TDMA (both slots; LCN 03-1966, 03-1967).

Should the other freqs shown for this site be removed, or do we need more long-term monitoring to be sure? I just happened to read this thread and tune to it for half an hour or so silently with Unitrunker (v2.1.0.55) before I remembered I needed to use DSD+ to get the TDMA audio (right?), so I didn't actually hear any of it.

Site 30 has been confirmed as Santiago so I think we are good to go with that. I had asked the question about the 'additional' frequencies in the database for that site as well as the Lukens site and got this response so I'm not sure what to make of that data.


Thank you all for the talk group and RID listings, even if they are just doing testing I think it's good to know what TGs and RIDs are being seen on what sites. As we get more data on this it could help to piece things together. Also talk groups that are used in testing can often end up being use on this system after go live.

I've heard what I suspect that TG to be CHP related but not enough info has been gathered at this time...

I have also heard/seen some references to talk groups that may or may not be CHP related.

 

[Gene]

Using Unitrunker from Northern San Diego County this morning this is what I got.

 

[Outerdog]

Little blip this morning on Site 18, 0x00 channel grants to RID 763310 on TG 50001, 774.29375 Slot 2. (The "/ 2" indicator will not show up in this view unless there is a slot 2 grant.)

 

[scannerboy02]

Little blip this morning on Site 18, 0x00 channel grants to RID 763310 on TG 50001, 774.29375 Slot 2. (The "/ 2" indicator will not show up in this view unless there is a slot 2 grant.)

View attachment 104164

I'm not completely understanding what you're saying here, what's the blip? I do like that layout though, I will be watching for this release!

 

[Outerdog]

Blip. Just a hit. A radar blip. No secret meaning.

 

[scannerboy02]

Blip. Just a hit. A radar blip. No secret meaning.

Got it, I thought you were referring to an error of some kind.

 

[ECPD279]

It is always possible that it's not Diablo. Until someone takes a drive to the site I guess we'll never really know. I will do this on my next trip out to California if someone else doesn't do it first.

It's also possible that they are running it at a lower power due to its elevation as to not affiliate every radio in northern California

It's also a question of WHERE on Diablo it would be. I'm line of sight to all Diablo radio sites, but if it's at the old FAA site, for example, it would be shadowed from Brentwood, whereas the North Peak sites would light him up.

Comparing to other Sonoma sites (i.e. Golden Gate Bridge District), I can't get Sonoma with a duck from home, and even on the yagi it's maybe S3. Vaca is very similar strength wise. I'm on the west end of Martinez near the Concord airport and I'm on the east slope of the hills. This seriously hampers signals from the west. The only high level sites I get this strong with a duck are Diablo, Kregor and Rocky Ridge.

Site 18 is off the scale from here. Even in the back null of the yagi. The only other option that would make sense would be Cummings Peak, but that's not one of the planned sites, and also isn't a high level site.

Based on the info I have collected so far, I'm quite confident site 18 is Diablo, but you're correct, we won't know for sure until one of us makes the drive. I'll try to get up there on my next day off if someone doesn't beat me to it.

 

[kg6nlw]

Based on the info I have collected so far, I'm quite confident site 18 is Diablo, but you're correct, we won't know for sure until one of us makes the drive. I'll try to get up there on my next day off if someone doesn't beat me to it.

Guess it's a "race" to see who hears what first! Thursday and Sunday are my travel days so we shall see what I pick up then!

Regards,

-Frank C.

 

[N6ML]

It's also a question of WHERE on Diablo it would be. I'm line of sight to all Diablo radio sites, but if it's at the old FAA site, for example, it would be shadowed from Brentwood, whereas the North Peak sites would light him up.

I'm aware of three sites on south peak - the ATC one with the big tower, the stuff on the ridge above the summit visitor center parking lot, and (what I've heard referred to as) the "Navy site" (opposite side of the road from ATC). I can see most of the ATC tower - if the antenna is really low on the tower (or temporarily on the roof of the building), it could be blocked by the summit, but clear towards Martinez and Concord). The Navy site may be marginally blocked, but I'd think that might be the case towards Martinez too?). I can see the lookout tower on the summit.

It'll be interesting to find out the real story here

 

[AM909]

@scannerboy02 @Gene got hits Tuesday on another voice channel for 1.30 Santiago – 774.81875 (which I had previously seen as well), so I guess we've confirmed that both that and the 774.29375 voice channels have been used within a couple days each other. I guess they could be testing the site with just one voice radio and assigning different channels, or there's some scheme other than "in order" in which they assign channels, or pretty much anything else while the system is still testing. I remembered to punch it up today about 15:45 local and got no traffic through 17:11 (as I write this).

(somewhat OT)
Can someone familiar comment on the channel assignment schemes used on these P25 systems? Does the same physical base/repeater radio stay assigned to the same channel usually? I can see that still being necessary in some circumstances (even in this day of easily-programmed radios) because of combiner/multi-coupler tuning. If so, I would think they would continue to use a scheme that tries to balance usage among the radios, either by just assigning them in order, or keeping track of total minutes used per channel. The purpose of the question is to understand whether, if I monitor a system for a while and see it appears to step through the voice channels more or less, and see it cycle through them a few times, is it reasonable to assume that I've seen all the voice channels in use (aside from radios that are temporarily down)? On systems that have 450 MHz and 460 MHz or 700 MHz and 800 MHz channels, is it possible they can configure them to prefer certain channels based on talk group or subscriber radio type or some other criteria? There are a lot of database entries that have channels that I think probably came from the licenses, for which I never see any OTA activity. I just wonder when it is safe to conclude they should be updated.

 

[N6ML]

I had to read the last post a few times to really understand what you're asking. It's an interesting question. I had imagined that each channel would have a dedicated receiver and transmitter, and associated filtering, for a fixed frequency-pair. Distributing usage across all available transmitters seems like it'd be a good idea for overall longevity (lower average duty-cycle for each transmitter), but the control channels are transmitting constantly, so presumably the transmitters are rated to handle this (unless they use heavy-duty ones for control channels??). I also wondering if the voice channels run higher power (or rather that the control channels run at reduced power) for that reason - from casual observation, it seems like voice channels are often stronger than the corresponding control channel. I also wonder if they share antennas or if each channel has its own....